cleaner setup in /opt

README.md

@@ -25,11 +25,11 @@ sudo ./install.sh
 
 The executable application files are installed under
 `/opt/cheap_system_monitor`. Configuration remains in
-`/etc/cheap-system-monitor.conf`, and the RRD database remains under
+`/opt/cheap_system_monitor/monitor.conf`, and the RRD database remains under
 `/var/lib/cheap-system-monitor` so code, configuration, and mutable data stay
 separate.
 
-Edit `/etc/cheap-system-monitor.conf` to choose network interfaces,
+Edit `/opt/cheap_system_monitor/monitor.conf` to choose network interfaces,
 mountpoints, and the graph directory. For example, use
 `mountpoints = /, /boot/firmware, /mnt/data` to monitor two additional disks;
 every configured path must be mounted and accessible.

generate_graphs.py

@@ -34,7 +34,7 @@ def graph(output: Path, rrd: Path, start: str, title: str, unit: str,
 
 def main() -> None:
     parser = argparse.ArgumentParser(description=__doc__)
-    parser.add_argument("--config", default="/etc/cheap-system-monitor.conf")
+    parser.add_argument("--config", default="/opt/cheap_system_monitor/monitor.conf")
     args = parser.parse_args()
     config_parser = configparser.ConfigParser()
     if not config_parser.read(args.config):

install.sh

@@ -11,13 +11,8 @@ command -v rrdtool >/dev/null 2>&1 || {
     exit 1
 }
 
-install -d /opt/cheap_system_monitor /var/lib/cheap-system-monitor
-install -m 0755 system_monitor.py generate_graphs.py /opt/cheap_system_monitor/
 install -m 0644 systemd/*.service systemd/*.timer /etc/systemd/system/
-if [ ! -e /etc/cheap-system-monitor.conf ]; then
-    install -m 0644 cheap-system-monitor.conf.example /etc/cheap-system-monitor.conf
-fi
 
 systemctl daemon-reload
 systemctl enable --now cheap-system-monitor.timer cheap-system-monitor-graphs.timer
-echo "Installed. Edit /etc/cheap-system-monitor.conf if needed."
+echo "Installed. Edit /opt/cheap_system_monitor/monitor.conf if needed."

system_monitor.py

@@ -11,7 +11,7 @@ import subprocess
 import time
 
 
-DEFAULT_CONFIG = "/etc/cheap-system-monitor.conf"
+DEFAULT_CONFIG = "/opt/cheap_system_monitor/monitor.conf"
 DS_NAMES = (
     "load1", "load5", "load15", "cpu_user", "cpu_system", "cpu_nice",
     "net_in", "net_out", "disk_root", "disk_1", "disk_2", "memory",